Pirate 4x4 banner

balance a driveshaft with BB's or airsoft?

1 reading
17K views 23 replies 14 participants last post by  Bray D  
#1 ·
Would it work?

came up on the local board and had no idea.
 
#4 ·
I have no idea if it will work on a driveshaft or not, maybe Jess will chime in...

I have heard of guys putting 4-5 oz of ATF in a DIY driveshaft to help balance it, but I don't know if it really helps.

Looks like it works on a soda bottle:
YouTube - DynaBeads demo video by Evolution Cycles
 
#6 ·
#11 ·
Just a question, I am not flaming or trying to piss anyone off. But .....How much do you spend on internet? How much does your computer cost? How much do you spend on wheelin? Why not spend $30-$40 (if it cost that much) and get your driveshaft balanced if you think its necessary instead of wasting time and money on things that dont work. If money is the issue, pack your lunch for work a couple of days, eat out less and get your rig fixed the way you want it or think it needs to be. I myself have a buggy with a unbalanced driveshaft, and I have no problems with it being unbalanced. Just my $.02 and sorry if you dont like my opinion, cause everyone on this forums is different anyhow.
 
#24 ·
It would balance it statically but not dynamically. It may be enough that its unnoticable but there will still be an unbalance.

Think if the shafts unbalance is towards the trans end of the shaft. The balancing BB's would be towards the pinion end. Though the BB's would balance the force of the unbalance by locating itself 180* radially from the shafts unbalance, it wouldn't balance torques.

The distance between the unbalance and your corrective balance would create a torque on the shaft, which is CONSTANTLY changing direction, and increases in magnitude with an increase in RPM. This creates cyclical loading at the pinion and the trans. It may be noticeable, maybe not.